C/1892 E1 (Swift)
| Parameter |
Value |
| Designation |
C/1892 E1 (Swift) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1892-04-07T03:44:20.731200Z |
| Orbit solution date (soln_date, UTC) |
2023-10-09T20:36:13Z |
| Obs used |
53 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1892-07-27.0000000 |
| e |
0.99880065 |
| q (au) |
1.026893 |
| a (au) |
856.207621 |
| i (deg) |
38.700724 |
| Ω (om, deg) |
242.428343 |
| ω (w, deg) |
24.504179 |
| M (ma, deg) |
0.004361 |
Magnitude
Scatter + Global Linear
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
04:55:55.82 |
+12:47:06.7 |
HIP 22826 |
31.39 |
| 2026-02-03 12:00 |
04:55:55.37 |
+12:47:07.8 |
HIP 22826 |
31.34 |
| 2026-02-04 00:00 |
04:55:54.93 |
+12:47:08.8 |
HIP 22826 |
31.30 |
| 2026-02-04 12:00 |
04:55:54.50 |
+12:47:09.9 |
HIP 22826 |
31.25 |
| 2026-02-05 00:00 |
04:55:54.08 |
+12:47:11.1 |
HIP 22826 |
31.21 |
| 2026-02-05 12:00 |
04:55:53.66 |
+12:47:12.2 |
HIP 22826 |
31.17 |
| 2026-02-06 00:00 |
04:55:53.25 |
+12:47:13.3 |
HIP 22826 |
31.13 |
| 2026-02-06 12:00 |
04:55:52.84 |
+12:47:14.5 |
HIP 22826 |
31.09 |
| 2026-02-07 00:00 |
04:55:52.44 |
+12:47:15.7 |
HIP 22826 |
31.06 |
| 2026-02-07 12:00 |
04:55:52.05 |
+12:47:16.9 |
HIP 22826 |
31.02 |
| 2026-02-08 00:00 |
04:55:51.67 |
+12:47:18.2 |
HIP 22826 |
30.99 |
| 2026-02-08 12:00 |
04:55:51.29 |
+12:47:19.4 |
HIP 22826 |
30.96 |
| 2026-02-09 00:00 |
04:55:50.92 |
+12:47:20.7 |
HIP 22826 |
30.93 |
| 2026-02-09 12:00 |
04:55:50.55 |
+12:47:22.0 |
HIP 22826 |
30.90 |
| 2026-02-10 00:00 |
04:55:50.19 |
+12:47:23.3 |
HIP 22826 |
30.87 |
| 2026-02-10 12:00 |
04:55:49.84 |
+12:47:24.6 |
HIP 22826 |
30.85 |
| 2026-02-11 00:00 |
04:55:49.50 |
+12:47:26.0 |
HIP 22826 |
30.82 |
| 2026-02-11 12:00 |
04:55:49.16 |
+12:47:27.3 |
HIP 22826 |
30.80 |
| 2026-02-12 00:00 |
04:55:48.83 |
+12:47:28.7 |
HIP 22826 |
30.78 |
| 2026-02-12 12:00 |
04:55:48.51 |
+12:47:30.1 |
HIP 22826 |
30.76 |
| 2026-02-13 00:00 |
04:55:48.19 |
+12:47:31.5 |
HIP 22826 |
30.74 |
| 2026-02-13 12:00 |
04:55:47.88 |
+12:47:33.0 |
HIP 22826 |
30.72 |
| 2026-02-14 00:00 |
04:55:47.58 |
+12:47:34.4 |
HIP 22826 |
30.70 |
| 2026-02-14 12:00 |
04:55:47.28 |
+12:47:35.9 |
HIP 22826 |
30.69 |
| 2026-02-15 00:00 |
04:55:47.00 |
+12:47:37.4 |
HIP 22826 |
30.67 |
| 2026-02-15 12:00 |
04:55:46.72 |
+12:47:38.9 |
HIP 22826 |
30.66 |
| 2026-02-16 00:00 |
04:55:46.44 |
+12:47:40.4 |
HIP 22826 |
30.65 |
| 2026-02-16 12:00 |
04:55:46.17 |
+12:47:41.9 |
HIP 22826 |
30.64 |
| 2026-02-17 00:00 |
04:55:45.92 |
+12:47:43.5 |
HIP 22826 |
30.63 |
| 2026-02-17 12:00 |
04:55:45.66 |
+12:47:45.1 |
HIP 22826 |
30.62 |
| 2026-02-18 00:00 |
04:55:45.42 |
+12:47:46.7 |
HIP 22826 |
30.61 |
| 2026-02-18 12:00 |
04:55:45.18 |
+12:47:48.3 |
HIP 22826 |
30.61 |
| 2026-02-19 00:00 |
04:55:44.95 |
+12:47:49.9 |
HIP 22826 |
30.60 |
| 2026-02-19 12:00 |
04:55:44.73 |
+12:47:51.5 |
HIP 22826 |
30.60 |
| 2026-02-20 00:00 |
04:55:44.51 |
+12:47:53.2 |
HIP 22826 |
30.60 |
| 2026-02-20 12:00 |
04:55:44.30 |
+12:47:54.9 |
HIP 22826 |
30.60 |
| 2026-02-21 00:00 |
04:55:44.10 |
+12:47:56.6 |
HIP 22826 |
30.60 |
| 2026-02-21 12:00 |
04:55:43.91 |
+12:47:58.3 |
HIP 22826 |
30.60 |
| 2026-02-22 00:00 |
04:55:43.72 |
+12:48:00.0 |
HIP 22826 |
30.61 |
| 2026-02-22 12:00 |
04:55:43.54 |
+12:48:01.7 |
HIP 22826 |
30.61 |
| 2026-02-23 00:00 |
04:55:43.37 |
+12:48:03.5 |
HIP 22826 |
30.62 |
| 2026-02-23 12:00 |
04:55:43.20 |
+12:48:05.2 |
HIP 22826 |
30.62 |
| 2026-02-24 00:00 |
04:55:43.05 |
+12:48:07.0 |
HIP 22826 |
30.63 |